Patents Assigned to Applied Systems Corporation
  • Catadioptric virtual-zoom optical system
    Patent number: 4278330
    Abstract: A zoom optical system utilizes a virtual object relay system in order to obtain compact size in a large aperture instrument while minimizing chromatic aberration. The size may further be reduced by employing limited amounts of special optical materials for some of the lens elements.
    Type: Grant
    Filed: May 14, 1979
    Date of Patent: July 14, 1981
    Assignee: Applied Systems Corporation
    Inventor: Richard A. Buchroeder